EP 1387959 A2 20040211 - FLUID CONTROLLED PUMPING SYSTEM AND METHOD
Title (en)
FLUID CONTROLLED PUMPING SYSTEM AND METHOD
Title (de)
FLUIDGESTEUERTES PUMPSYSTEM UND VERFAHREN
Title (fr)
SYSTEME ET PROCEDE DE POMPAGE REGULE DE LIQUIDE
Publication
Application
Priority
- US 0212751 W 20020423
- US 84174801 A 20010424
- US 84177301 A 20010424
Abstract (en)
[origin: WO02086322A2] A fluid controlled pumping system includes a pumping unit disposed within a fluid cavity. The pumping unit includes a passage extending to a suction end of the pumping unit. The system also includes a pressure source coupled to the passage and operable to force a fluid outwardly from the passage proximate to the suction end of the pumpimg unit. The system includes a pressure sensor coupled to the passage. The system further includes a controller coupled to the pumping unit and operable to regulate an operating parameter of the pumping unit using the fluid pressure. A fluid level controlled pumping system includes a pumping unit disposed within a fluid cavity. The pumping unit includes an inlet operable to receive a fluid to be pumped from the fluid cavity. The system also includes a valve slidably coupled to the pumping unit. The valve includes a passage for receiving pumped fluid from an outlet of the pumping unit. In response to a decreasing fluid level within the fluid cavity, movement of the valve relative to the pumping unit to recirculate the pumped fluid from the outlet to the inlet.
[origin: WO02086322A2] A fluid controlled pumping system includes a pumping unit (12) disposed within a fluid cavity (13). The pumping unit (12) includes a passage (60) extending to a suction end of the pumping unit. The system also includes a pressure source (72) coupled to the passage (60) and operable to force a fluid outwardly from the passage proximate to the suction end (34) of the pumpimg unit. The system includes a pressure sensor (74) coupled to the passage (60). The system further includes a controller (76) coupled to the pumping unit (12) and operable to regulate an operating parameter of the pumping unit using the fluid pressure. A fluid level controlled pumping system includes a pumping unit (106) disposed within a fluid cavity. The pumping unit includes an inlet (118) operable to receive a fluid to be pumped from the fluid cavity. The system also includes a valve (140) slidably coupled to the pumping unit. The valve (140) includes a passage (160) for receiving pumped fluid from an outlet (122) of the pumping unit. In response to a decreasing fluid level within the fluid cavity, movement of the valve relative to the pumping unit aligns the passage (160) with a port (190) of the pumping unit to recirculate the pumped fluid from the outlet to the inlet.
IPC 1-7
IPC 8 full level
F04C 2/16 (2006.01); E21B 47/00 (2012.01); F04B 15/02 (2006.01); F04B 47/02 (2006.01); F04B 49/00 (2006.01); F04B 49/10 (2006.01); F04C 13/00 (2006.01); F04C 14/00 (2006.01); F04C 14/08 (2006.01); F04C 14/24 (2006.01); F04C 14/28 (2006.01); F04D 15/02 (2006.01)
CPC (source: EP)
E21B 47/008 (2020.05); F04C 13/008 (2013.01); F04C 14/08 (2013.01); F04C 14/28 (2013.01); F04D 15/0218 (2013.01)
Citation (search report)
See references of WO 02086322A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02086322 A2 20021031; WO 02086322 A3 20030417; CA 2441307 A1 20021031; CN 1503879 A 20040609; EP 1387959 A2 20040211; JP 2004537669 A 20041216; MX PA03009673 A 20040524; NO 20034736 D0 20031023; NO 20034736 L 20031219; RU 2003134142 A 20050520
DOCDB simple family (application)
US 0212751 W 20020423; CA 2441307 A 20020423; CN 02808561 A 20020423; EP 02726793 A 20020423; JP 2002583819 A 20020423; MX PA03009673 A 20020423; NO 20034736 A 20031023; RU 2003134142 A 20020423